CN103206580A - Ultrahigh molecular-weight polyethylene composite tubing and production method thereof - Google Patents
Ultrahigh molecular-weight polyethylene composite tubing and production method thereof Download PDFInfo
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- CN103206580A CN103206580A CN2013101190691A CN201310119069A CN103206580A CN 103206580 A CN103206580 A CN 103206580A CN 2013101190691 A CN2013101190691 A CN 2013101190691A CN 201310119069 A CN201310119069 A CN 201310119069A CN 103206580 A CN103206580 A CN 103206580A
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Abstract
The invention discloses an ultrahigh molecular-weight polyethylene composite tubing and a production method thereof. The tubing is of five-layer composite structure, a core layer (1) is formed by winding drawn and oriented sheets, an adhesive layer (2) and a vulcanized rubber layer (3) are coated on the outer surface of the core layer, a helically wound reinforced fiber layer (4) is wrapped outside the vulcanized rubber layer, and the outermost layer is an HDPE (high-density polyethylene) layer (5). The production method includes: firstly, drawing and orienting ultrahigh molecular-weight polyethylene to form sheets; secondly, winding the sheets of the first step to form the core layer, winding a circular tube by drafted and oriented ultrahigh molecular-weight polyethylene sheets, welding adjacent tubing seams to form a continuous core tube; thirdly, coating adhesives on the outer surface of the core layer; fourthly, winding the vulcanized rubber layer on the surface of the adhesive layer formed in the third step; fifthly, winding a fiber belt on the surface of the vulcanized rubber layer; sixthly, wrapping an HDPE melt layer on the outer surface of the fiber belt to form a composite tubing; and seventhly, vulcanizing the composite tubing formed in the sixth step.
Description
Technical field
The invention belongs to high-performance composite pipe technical field, particularly a kind of ultra-high molecular weight polyethylene composite pipe and production method thereof.
Background technique
Ultra-high molecular weight polyethylene (UHMWPE) is a kind of thermoplastic engineering plastic with excellent combination property of linear structure, have because molecular weight is high the unrivaled excellence of other plastics shock-resistant, wear-resistant, selflubricating, resistance to chemical attack, asepsis environment-protecting, be difficult for performances such as suction, density be less, the title of " surprised plastics " is at home and abroad arranged.The physical and mechanical property of UHMWPE excellence makes UHMWPE tubing have purposes widely in each field of national economy, and particularly as carrying engineering tubing such as particle, granular material and slurry, solidliquid mixture, application is very wide.
East China has very long shore line, and the bay desilting is bigger than the difficulty of channel cleanout, and coral reef, cobble, silt are bigger to the wearing and tearing of tubing than the silt in river.Tianjin Navigation Bureau is engaged in the desilting work in Bohai Sea Gulf in recent years always, and the annual expense that is used for replacing desilting tubing (steel pipe) reaches up to ten million yuans.
Traditional desilting sandline uses steel pipe and strengthens rubber pipe, because wearing and tearing are big, cost is high, efficient is low, therefore, optimal sediment transport tubing is that friction factor is low, wear-resistant, the superhigh molecular weight polyethylene pipe of high-impact.Ultra-high molecular weight polyethylene MULTILAYER COMPOSITE tubing, its compressive strength is up to 2-20MPa, when for delivery of the strong liquid of crude oil, mud, water coal slurry, power plant and colliery pulverized fuel ash, mine tailing, the contour frictional property of ore pulp, adhesive force and solidliquid mixture, be several times to tens times of seamless steel pipe its working life.
Ultrahigh molecular weight polyethylene abrasion-proof, stress crack resistant, the excellent performance aspect power plant and colliery ash transfer, crude oil, mine tailing conveying, mud, ore pulp conveying, solid/liquid mixture and solid matter conveying.Therefore, heavy caliber ultrahigh molecular weight polyethylene tubing manufacturing technology becomes the key state project project.Yet the tensile strength of ultra-high molecular weight polyethylene is low, creep resisting ability is poor, anti-cutting power is poor.Simple ultrahigh molecular weight polyethylene tubing compressive strength is low, creep easily, and anti-corollary failure ability therefore can not be as the conveyance conduit of above-mentioned material.In addition, because the ultra-high molecular weight polyethylene critical shear rate is low, melt fracture takes place easily in extrusion process, process very difficultly, throughput rate is extremely slow, and cost of production is higher, has had a strong impact on application and the marketing of material.
Summary of the invention
The purpose of this invention is to provide a kind of ultra-high molecular weight polyethylene composite pipe and production method thereof.
The present invention for achieving the above object, be achieved through the following technical solutions: a kind of ultra-high molecular weight polyethylene composite pipe, comprise core pipe layer (1), sticker layer (2), vulcanized rubber layer (3), reinforcing fiber layer (4) and HDPE layer (5), it is characterized in that described core pipe layer (1) is the superhigh molecular weight polyethylene pipe of sheet material through being entwined by stretch orientation, core pipe layer (1) is twined by the ultra-high molecular weight polyethylene sheet material and forms.Core pipe layer outer surface scribbles tackiness agent (2) but vulcanized rubber (3), and the vulcanized rubber coated outside the reinforcing fiber band (4) that spiral twines, and outermost surface is HDPE tubing layer (5).
The production method of ultra-high molecular weight polyethylene composite pipe may further comprise the steps:
1. ultra-high molecular weight polyethylene is formed sheet material by stretch orientation;
2. twine with step sheet material 1. and form core pipe layer;
3. at core pipe layer outer surface application of adhesive;
4. but the adhesive layer surface that 3. forms in step is twined the vulcanized rubber layer;
But 5. twine fiber band at the vulcanized rubber laminar surface;
6. coat the HDPE melt layer at the fiber band outer surface, form composite pipe;
7. the composite pipe that 6. step is formed vulcanizes.
Wherein 1. step forms the high strength sheet material with the ultra-high molecular weight polyethylene sheet material 90 ℃-150 ℃ draw ratio draw orientation through 1.1-10;
2. step is wound in the pipe shape with the ultra-high molecular weight polyethylene sheet material through draw orientation, and adjacent pipe seam forms continuous core pipe layer by welding;
Step 3. core tube outer surface is carried out Surface Treatment with Plasma, and applies certain thickness tackiness agent;
4. step twines the vulcanizable rubber that a layer thickness is the 0.1-5 millimeter at adhesive surface;
5. step presses several angle with the unidirectional fibre band that prefabricated high-temperature fusion HDPE applies, but the limit heating edge is wrapped in the vulcanized rubber outside;
6. step plastifies the HDPE melt with extruder and clamp-ons in the coating mould, and in coating mould, the HDPE melt is coated on the fiber band outer surface equably;
7. step makes then that tubing is long by 0.5-4.5 rice, temperature is that 90-120 ℃ heat tunnel carries out the sulfuration of rubber;
8. step makes ultra-high molecular weight polyethylene composite pipe finally by typing excessively, traction, severing.
Wherein step 1. described ultra-high molecular weight polyethylene sheet material can be that the ultra-high molecular weight polyethylene material is directly extruded and made sheet material, also can be that the ultra-high molecular weight polyethylene material is extruded into tubing, directly cut open also along extruding direction is cut into certain width with gang saw sheet material rolling through the online of tubing again;
Step 1. described ultra-high molecular weight polyethylene sheet material makes the tensile strength of UHMWPE improve 2-3 doubly through draw orientation;
Step 2. described welding manner is hot plate welding, flatiron welding, ultrasonic welding or laser bonding;
Step 3. described surface treatment comprises and in plasma treatment, corona treatment, the flame treatment one or more in case of necessity, needs pipe outer surface is carried out the emery wheel hacking before the plasma treatment;
Step 3. described tackiness agent is in rubber adhesive, acrylic adhesives, epoxy adhesive, vinyl ester tackiness agent, the silicone based tackiness agent one or more; Tackiness agent is coated in the ultrahigh molecular weight polyethylene tubing surface by the mode of brushing or spray, and descends dry 4-100 minute at 20-100 ℃ then, makes tackiness agent form dry film, and the thickness of dry film is the 5-40 micron; The necessary finish-drying of tackiness agent, otherwise can cause dissolvent residual in glued membrane, when the vulcanization of rubber is bonding, can break through glued membrane, cause and come unstuck;
But step 4. described vulcanized rubber by in natural rubber (NR), styrene butadiene rubber (SBR), butadiene rubber (BR), isoprene rubber (IR), neoprene (CR), nitrile rubber (NBR), hydrogenation nitrile rubber (HNBR), ethylene propylene rubber (EPM EPDM), the acrylate rubber (ACM AEM) one or more; The thickness of rubber layer is the 0.1-5 millimeter; Rubber has high elasticity, can help the transmission of stress as the tubing vibration-absorptive material, has strengthened the erosion-resisting characteristics of tubing, has reduced nature or personal factor to the destruction of tubing, has improved the working life of tubing; In addition, the rubber layer in the ultra-high molecular weight polyethylene composite pipe can be used as the sealing layer of tubing, prevents gas or leak of liquid in the tubing, has improved the bearing strength of tubing.
Step 5. described fiber band is the unidirectional fibre band that is formed by one or more braidings in asbestos fiber, glass fibre, the carbon fiber; The width of fiber band is the 90-160 millimeter, according to bearing strength and the requirement of tubing ring stiffness of predetermined tubing, can adopt fiber band of the same race or different fiber band to carry out the multilayer intersection and twine; Fiber band need have suitable tension force when twining;
The step 5. fiber band of described coating HDPE needs to twine under 120-160 ℃ hot blast, and the axial angle of the winding direction of fiber band and tubing is 45-75 °;
The step 7. sulfuration of described rubber is to carry out in circular high temperature channel, different according to the content of different building rubber compounds and vulcanzing agent, catalyzer etc., and the control temperature is at 90-120 ℃;
The molecular weight of above-mentioned ultra-high molecular weight polyethylene is between 1,500,000-5,000,000;
The invention has the advantages that:
1) is suitable for the making that multiple heavy caliber UHMWPE strengthens tubing;
2) make sheet material according to certain width with the method for gang saw cutting along extruding direction with online directly the cuing open also of tubing, make the easy mass production of band;
3) the band draw orientation has improved UHMWPE tensile strength 2-3 doubly;
4) but the use of plasma surface treatment and rubber adhesive helps the combination of UHMWPE and vulcanized rubber, the application of rubber sheet had both helped the transmission of tubing stress, had also improved the flexibility of tubing and had prevented the issuable seepage of delivering liquid material;
5) compare with steel wire and organic fiber, adopt HDPE precoating unidirectional fibre band to strengthen UHMWPE tubing and both improved tubing intensity, the circumferential deformation of tubing when also greatly reducing pressurized;
6) be coated with HDPE outside and help to reduce the comprehensive manufacture cost of tubing;
7) according to the working condition of tubing use and the bore of tubing, can the corresponding thickness that changes the UHMWPE rub resistance.
Description of drawings
Accompanying drawing 1 is the structural representation of ultra-high molecular weight polyethylene composite pipe of the present invention.
Among the figure: 1, core pipe layer; 2, sticker layer; 3, vulcanized rubber layer; 4, reinforcing fiber layer; 5, HDPE layer.
Embodiment
Embodiment 1
A kind of ultra-high molecular weight polyethylene composite pipe has 5 layers of composite structure, the core pipe is the ultrahigh molecular weight polyethylene tubing that stretched orientation sheet material is wound in, the core tube outer surface scribbles adhesive C ILBOND 24, natural rubber, it is wide that the rubber coated outside that spiral twines is 110 millimeters glass fiber tape, and skin is HDPE tubing layer.
The production method of described high strength ultra-high molecular weight polyethylene composite pipe may further comprise the steps:
1. be that 3,500,000 ultra-high molecular weight polyethylene material is extruded formation sheet material with molecular weight, directly cut open through sheet material online and be cut into the sheet material of certain width along extruding direction with gang saw, sheet material forms the high strength sheet material 145 ℃ of draw ratio draw orientation through 3.5;
2. be wound in the pipe shape with the ultra-high molecular weight polyethylene sheet material through draw orientation, adjacent pipe seam forms the continuous core pipe by welding;
3. the core tube outer surface carries out Surface Treatment with Plasma, and applies certain thickness adhesive C ILBOND 24;
4. twining a layer thickness on adhesive C ILBOND 24 surfaces is 1.5 millimeters vulcanizable natural rubbers;
5. the one-way glass fiber band that applies with prefabricated high-temperature fusion HDPE is 55 ° by the axial angle of winding direction and tubing, but is wrapped in the vulcanized rubber outside in the following heating edge of 130 ℃ hot blast;
6. with extruder plasticizing HDPE melt and clamp-on in the coating mould, in coating mould, the HDPE melt is coated on the fiber band outer surface equably;
7. make then that tubing is long by 3.2 meters, the heat tunnel of 115 ℃ of temperature carries out the sulfuration of rubber;
8. make the high strength ultra-high molecular weight polyethylene composite pipe finally by typing excessively, traction, severing;
Step 1. described ultra-high molecular weight polyethylene sheet material makes the tensile strength of UHMWPE improve 2-3 doubly through draw orientation;
Step 2. described welding manner is hot plate welding, flatiron welding, ultrasonic welding, laser bonding;
3. step needs pipe outer surface is carried out the emery wheel hacking before the described plasma treatment;
Step 3. described adhesive C ILBOND 24 by brushing or the mode of spraying is coated in the ultrahigh molecular weight polyethylene tubing surface, then 25 ℃ dry 45 minutes down, make tackiness agent form dry film, the thickness of dry film is 25 microns.
Embodiment 2
A kind of ultra-high molecular weight polyethylene composite pipe has 5 layers of composite structure, the core pipe is the ultrahigh molecular weight polyethylene tubing that stretched orientation sheet material is wound in, the core tube outer surface scribbles polyethylene adhesive, styrene butadiene rubber, it is wide that the rubber coated outside that spiral twines is 110 millimeters carbon fiber tape, and skin is HDPE tubing layer.
The production method of described high strength ultra-high molecular weight polyethylene composite pipe may further comprise the steps:
1. be that 3,500,000 ultra-high molecular weight polyethylene material is extruded formation sheet material with molecular weight, directly cut open through sheet material online and be cut into the sheet material of certain width along extruding direction with gang saw, sheet material forms the high strength sheet material 145 ℃ of draw ratio draw orientation through 3.5;
2. be wound in the pipe shape with the ultra-high molecular weight polyethylene sheet material through draw orientation, adjacent pipe seam forms the continuous core pipe by laser bonding;
3. the core tube outer surface carries out plasma treatment, and brushes certain thickness polyethylene adhesive;
4. under 140 ℃ of hot blasts, be that 1.0 millimeters vulcanizable styrene butadiene rubber are wrapped in the polyethylene adhesive surface with thickness;
5. being with the axial angle by winding direction and tubing with the unidirectional carbon fiber dimension of prefabricated high-temperature fusion HDPE coating is 55 °, but is wrapped in the vulcanized rubber outside in the following heating edge of 130 ℃ hot blast;
6. with extruder plasticizing HDPE melt and clamp-on in the coating mould, in coating mould, the HDPE melt is coated on the fiber band outer surface equably;
7. make then that tubing is long by 4.5 meters, the heat tunnel of 125 ℃ of temperature carries out the sulfuration of rubber;
8. make the high strength ultra-high molecular weight polyethylene composite pipe finally by typing excessively, traction, severing.
Step 1. described ultra-high molecular weight polyethylene sheet material makes the tensile strength of UHMWPE improve 2-3 doubly through draw orientation;
3. step needs pipe outer surface is carried out the emery wheel hacking before the described plasma treatment.
Claims (15)
1. ultra-high molecular weight polyethylene composite pipe, comprise core pipe layer (1), sticker layer (2), vulcanized rubber layer (3), reinforcing fiber layer (4) and HDPE layer (5), it is characterized in that described core pipe layer (1) is the superhigh molecular weight polyethylene pipe of sheet material through being entwined by stretch orientation.
2. ultra-high molecular weight polyethylene composite pipe as claimed in claim 1 is characterized in that described core pipe layer (1) is formed by the winding of ultra-high molecular weight polyethylene sheet material.
3. ultra-high molecular weight polyethylene composite pipe as claimed in claim 1, it is characterized in that described sticker layer (2) is to be formed by in rubber adhesive, acrylic adhesives, epoxy adhesive, vinyl ester tackiness agent, the silicone based tackiness agent one or more, the thickness of sticker layer is the 5-40 micron.
4. ultra-high molecular weight polyethylene composite pipe as claimed in claim 1, it is characterized in that described vulcanized rubber layer (3) is to be formed through sulfuration by in natural rubber (NR), styrene butadiene rubber (SBR), butadiene rubber (BR), isoprene rubber (IR), neoprene (CR), nitrile rubber (NBR), hydrogenation nitrile rubber (HNBR), ethylene propylene rubber (EPM EPDM), the acrylate rubber (ACM AEM) one or more, the thickness of vulcanized rubber layer is the 0.1-5 millimeter.
5. ultra-high molecular weight polyethylene composite pipe as claimed in claim 1, it is characterized in that described reinforcing fiber layer (4) is the unidirectional fibre band that is formed by one or more braidings in asbestos fiber, glass fibre, the carbon fiber, the width of fiber band is the 90-160 millimeter.
6. as the production method of any described ultra-high molecular weight polyethylene composite pipe of claim 1-5, it is characterized in that may further comprise the steps:
1. ultra-high molecular weight polyethylene is formed sheet material by stretch orientation;
2. twine with step sheet material 1. and form core pipe layer;
3. at core pipe layer outer surface application of adhesive;
4. but the adhesive layer surface that 3. forms in step is twined the vulcanized rubber layer;
But 5. twine fiber band at the vulcanized rubber laminar surface;
6. coat the HDPE melt layer at the fiber band outer surface, form composite pipe;
7. the composite pipe that 6. step is formed vulcanizes.
7. the production method of ultra-high molecular weight polyethylene composite pipe as claimed in claim 6 is characterized in that step sheet material 1. is to form 90 ℃-150 ℃ draw ratio draw orientation through 1.1-10.
8. the production method of ultra-high molecular weight polyethylene composite pipe as claimed in claim 6 is characterized in that 2. step comprises also that adjacent winding pipe seam forms continuous core pipe layer by welding.
9. the production method of ultra-high molecular weight polyethylene composite pipe as claimed in claim 6 is characterized in that 3. step carry out surface treatment application of adhesive again to core pipe layer outer surface earlier.
10. the production method of ultra-high molecular weight polyethylene composite pipe as claimed in claim 6, it is characterized in that step 4. vulcanizable rubber layer thickness be the 0.1-5 millimeter.
11. the production method of ultra-high molecular weight polyethylene composite pipe as claimed in claim 6, it is characterized in that step 5. said winding fiber band under 120-160 ℃ hot blast, twine, the axial angle of the winding direction of fiber band and tubing is 45-75 °.
12. the production method of ultra-high molecular weight polyethylene composite pipe as claimed in claim 6, it is characterized in that step 7. said sulfuration be to be that 90-120 ℃ heat tunnel vulcanizes with composite pipe by long 0.5-4.5 rice, temperature.
13. the production method as claim 6 or 7 described ultra-high molecular weight polyethylene composite pipes, it is characterized in that step sheet material 1. is that the ultra-high molecular weight polyethylene material is directly extruded the sheet material of making, or ultra-high molecular weight polyethylene is extruded into sheet material, directly cut open and be cut into the sheet material rolling of certain width along extruding direction with gang saw through online again, the molecular weight of described ultra-high molecular weight polyethylene is between 1,500,000-5,000,000.
14. the production method of ultra-high molecular weight polyethylene composite pipe as claimed in claim 8 is characterized in that described hot plate welding, flatiron welding, ultrasonic welding or the laser bonding of being welded as.
15. the production method of ultra-high molecular weight polyethylene composite pipe as claimed in claim 9 is characterized in that described surface treatment comprises one or more in plasma treatment, corona treatment, the flame treatment.
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| CN2013101190691A CN103206580A (en) | 2013-04-08 | 2013-04-08 | Ultrahigh molecular-weight polyethylene composite tubing and production method thereof |
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| CN2013101190691A CN103206580A (en) | 2013-04-08 | 2013-04-08 | Ultrahigh molecular-weight polyethylene composite tubing and production method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105952981A (en) * | 2016-05-20 | 2016-09-21 | 深圳市大疆创新科技有限公司 | Pultrusion pipe and manufacturing method and equipment thereof |
| CN106750919A (en) * | 2016-12-09 | 2017-05-31 | 武汉金牛经济发展有限公司 | A kind of double orientation polyolefin wrapped tube and preparation method thereof |
| CN107355604A (en) * | 2015-09-15 | 2017-11-17 | 邵素英 | A kind of preparation method of the flexible pipe of corrosion-resistant |
| CN108525237A (en) * | 2018-04-28 | 2018-09-14 | 陕西理工大学 | A kind of tennis racket |
| CN112495175A (en) * | 2020-10-22 | 2021-03-16 | 聂鹏飞 | Spray pipeline connecting device for desulfurization |
| CN114216000A (en) * | 2021-11-19 | 2022-03-22 | 中投(天津)智能管道股份有限公司 | Method for manufacturing prefabricated direct-buried steam heat-insulation pipe with nano heat-insulation layer |
| CN115027119A (en) * | 2022-06-22 | 2022-09-09 | 临海伟星新型建材有限公司 | Novel anti-impact composite pipe and preparation method thereof |
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| CN107355604A (en) * | 2015-09-15 | 2017-11-17 | 邵素英 | A kind of preparation method of the flexible pipe of corrosion-resistant |
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| CN108525237A (en) * | 2018-04-28 | 2018-09-14 | 陕西理工大学 | A kind of tennis racket |
| CN112495175A (en) * | 2020-10-22 | 2021-03-16 | 聂鹏飞 | Spray pipeline connecting device for desulfurization |
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| CN114216000A (en) * | 2021-11-19 | 2022-03-22 | 中投(天津)智能管道股份有限公司 | Method for manufacturing prefabricated direct-buried steam heat-insulation pipe with nano heat-insulation layer |
| CN115027119A (en) * | 2022-06-22 | 2022-09-09 | 临海伟星新型建材有限公司 | Novel anti-impact composite pipe and preparation method thereof |
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Application publication date: 20130717 |